Preparation and Properties of Polystyrene Deposited with TiN Film Using Atmospheric-Pressure Plasma Jet

For the high voltage vacuum interrupter and GIS (Gas insulated switchgear), surface flashover at the dielectric/vacuum and dielectric/air interfaces result in the insulation failure sometimes, which restricts the development of high voltage electrical equipment. The dynamic performances of surface charges on the dielectric are associated with surface flashover closely. Film deposition on the dielectric surface is regarded as a promising mothed to improve surface insulating performance of dielectric material. In this paper, a TiN film deposition method of using atmospheric-pressure plasma jet (APPJ) is proposed. Before and after the plasma modification with TiN film, the electrical properties of dielectric surface are discussed, respectively. The DC flashover voltage of sample with TiN film is increased obviously.